form_field(3x) — Linux manual page

form_field(3X)                                            form_field(3X)

NAME         top

       form_field - make and break connections between fields and forms

SYNOPSIS         top

       #include <form.h>

       int set_form_fields(FORM *form, FIELD **fields);
       FIELD **form_fields(const FORM *form);
       int field_count(const FORM *form);
       int move_field(FIELD *field, int frow, int fcol);

DESCRIPTION         top

       The function set_form_fields changes the field pointer array of
       the given form.  The array must be terminated by a NULL.

       The function form_fields returns the field array of the given
       form.

       The function field_count returns the count of fields in form.

       The function move_field moves the given field (which must be
       disconnected) to a specified location on the screen.

RETURN VALUE         top

       The function form_fields returns a pointer (which may be NULL).
       It does not set errno.

       The function field_count returns ERR if the form parameter is
       NULL.

       The functions set_form_fields and move_field return one of the
       following codes on error:

       E_OK The routine succeeded.

       E_BAD_ARGUMENT
            Routine detected an incorrect or out-of-range argument.

       E_CONNECTED
            The field is already connected to a form.

       E_POSTED
            The form is already posted.

       E_SYSTEM_ERROR
            System error occurred (see errno(3)).

SEE ALSO         top

       curses(3X), form(3X).

NOTES         top

       The header file <form.h> automatically includes the header file
       <curses.h>.

PORTABILITY         top

       These routines emulate the System V forms library.  They were not
       supported on Version 7 or BSD versions.

       The SVr4 forms library documentation specifies the field_count
       error value as -1 (which is the value of ERR).

AUTHORS         top

       Juergen Pfeifer.  Manual pages and adaptation for new curses by
       Eric S. Raymond.

COLOPHON         top

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                                                          form_field(3X)

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